Anti abrasion layer

Abstract

An article has an anti-abrasion layer, comprising a mixture of irregular particles of hard material and round particles essentially free of cutting edges embedded in a matrix material and the use thereof for the production of anti-abrasion surfaces on wood materials, decorative paper, or wood fiber sheets printed with patterns for the production of parquet floors, floor laminates, furniture surfaces or work boards and for the production of wear-resistant surface layers on support materials made from metal, glass, ceramics, plastic concrete or other materials.

What is claimed is: 
     
       1. An article having a substrate and an anti-abrasion layer on the surface of the substrate, wherein the substrate is selected from wood materials, decorative papers and wood fibre sheets printed with patterns, and the anti abrasion layer comprises:
 a mixture of irregular particles of hard material and round solid material particles, essentially free of cutting edges, embedded in a matrix material, wherein: 
 the particles of hard material have a Mohs hardness rating of at least 6, and the solid material particles have a Mohs hardness rating of at least 3, characterized in that:
 i. the average particle diameter of the solid material particles is equal to or less than the average particle diameter of the particles of hard material; 
 ii. the round solid particles essentially free of cutting edges are made of a material selected from the group consisting of glass and sintered ceramic; and 
 iii. the ratio of round solid material particles, essentially free of cutting edges, in the embedded mixture is 10 to 50 wt.-%, based on the total amount of embedded particles. 
 
 
     
     
       2. The article of  claim 1 , wherein the matrix material is selected from the group consisting of lacquer, plastics, glass, ceramic and enamel. 
     
     
       3. The article of  claim 1 , wherein the matrix material is a duroplastic, thermoplastic or elastomeric plastic. 
     
     
       4. The article of  claim 1 , wherein the matrix material is a synthetic resin with a base of melamine, acrylate, epoxy, polyurethane, polyamide, polyester, polyimide, latex, rubber, or mixtures thereof. 
     
     
       5. The article of  claim 1 , wherein the irregular particles of hard material are selected from the group consisting of aluminum oxide, corundum, molten corundum, sintered corundum, zirconium corundum, sol-gel corundum, silicon carbide and boron carbide. 
     
     
       6. The article of  claim 1 , further comprising up to 15 wt.-% modifying constituents, selected from the group consisting of Na 2 O, Li 2 O, K 2 O, Fe 2 O 3 , TiO 2 , MgO, CaO, NbO, LaO, Y 2 O 3 , CeO and B 2 O 3 . 
     
     
       7. The article of  claim 1 , wherein the total quantity of solid material particles embedded in the matrix is 5-70 vol.-%, based on the matrix material. 
     
     
       8. The article of  claim 1 , wherein the total quantity of solid material particles embedded in the matrix is 2 to 200 g/m 2 . 
     
     
       9. The article of  claim 1 , wherein the irregular particles of hard material and/or the round solid material particles, essentially free of cutting edges, are subjected to surface treatment with organic and/or inorganic adhesive agents before being embedded in the matrix material. 
     
     
       10. The article of  claim 9 , wherein the adhesive agent comprises an organosilane, selected from the group consisting of an aminoalkylsilane or an aminoalkylalkoxysilane selected from the group consisting of aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-aminopropylmethyldimethoxysilane, 3-aminopropylmethyldimethoxysilane, 3-aminopropylmethyldiethoxysilane, and N-(2-aminoethyl)-3-aminopropyltrimethoxysilane. 
     
     
       11. The article of  claim 9 , wherein the ratio of silane is 0.1 to 10 wt.-%, referred to the total ratio of particles of hard material and/or solid material particles. 
     
     
       12. The article of  claim 9 , characterized in that the adhesive agent comprises a silane. 
     
     
       13. The article of  claim 9 , wherein the adhesive agent comprises an organosilane.